Are you starting school now, or next year? If it's next year, then don't think about this now. Enjoy your time with her. When it comes time to send your applications out, talk to her, see how she feels. Obviously don't limit the schools you apply to on where she wants to stay/live/etc. But until you know that she wants to even try for a long distance relationship or move, you have no idea where either of you stand on the issue. If she's on the fence, then you need to make your decision for you. If you decide, together, that you want to make it work, then you have decide what's important, and try to include her in the decision making process. It won't be easy, but if you both agree that marriage is in your future, you must work through it together.